.container {
    width: 100%;
    flex-direction: column;
    justify-content: center;
    background-color: #E7F4F7;
    height: 100%;
}

.plane {
    margin-top: 80%;
    width: 100%;
    height: 100%;
}
.cloud {
    margin-top: 50%;
    width: 100%;
    height: 100%;
}
.mountain {
    width: 100%;
    height: 100%;
    bottom: 5%;
}

.simpleSize {
    background-color: blue;
    width: 100px;
    height: 100px;
}